Electrical Machines What is/are the advantages of parallel operation of alternators? Increase in reliability continuity supply is maintained Increase efficiency under light load conditions All of these Increase in reliability continuity supply is maintained Increase efficiency under light load conditions All of these ANSWER DOWNLOAD EXAMIANS APP
Electrical Machines In case of a DC Shunt motor if the load is decreased to some extent, what will happen to its speed? The speed will increase gradually. The speed will increase abruptly. The speed will remains almost constant. The speed will increase in proportion to reduction in load. The speed will increase gradually. The speed will increase abruptly. The speed will remains almost constant. The speed will increase in proportion to reduction in load. ANSWER DOWNLOAD EXAMIANS APP
Electrical Machines Use of fractional pitch winding All of these make it stiffer. results in reduced axial length of the machine. results in reduced leakage reactance. All of these make it stiffer. results in reduced axial length of the machine. results in reduced leakage reactance. ANSWER DOWNLOAD EXAMIANS APP
Electrical Machines On what factors the speed of dc motor depends? Armature current Ia. Field flux. Applied voltage. All of these. Armature current Ia. Field flux. Applied voltage. All of these. ANSWER DOWNLOAD EXAMIANS APP
Electrical Machines What are slot wedges in a DC machine made of? Cast iron. Mild steel. Fibre. Silicon steel. Cast iron. Mild steel. Fibre. Silicon steel. ANSWER DOWNLOAD EXAMIANS APP
Electrical Machines What will be the e.m.f. generated by a 4 pole lap connected DC Generator rotating at 1500 r.p.m.? Its flux per pole is 0.4 mWb and total no of armature conductors is 1000. 40 volts. 30 volts. 10 volts. 20 volts. 40 volts. 30 volts. 10 volts. 20 volts. ANSWER DOWNLOAD EXAMIANS APP
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